Throttle engine p0508 - 2004 Infiniti FX35

The following are some of the most common causes of the P0508 code.

• The Idle Air Control, or IAC, motor harness could be shorted or it could be open
• The IAC can also have a bad electrical connection due to the motor circuit
• The IAC itself could be faulty
• Dirty throttle body bore

contact your nearest help now

http://www.autocodes.com/p0508.html

https://www.obd-codes.com/p0123

https://www.obd-codes.com/p0113

Hope these help

Your vehicle does not have a IAC valve ! Your vehicle has electronic throttle control . P0351 probably a wiring issue or open driver inside the PCM for cylinder # one . Your best bet take it to the dealer , you have not the knowledge or tools to diagnose this problem ! You are obviously using some cheap code reader to pull codes with or you wouldn't come up with P0508 . Factory service info. does not show Po508 for that vehicle. Plus working for ford i know for a fact this vehicle does not have IAC . If the driver inside the PCM is bad it will need to go to dealer anyway for programming .

P0508 Chrysler Idle Air Control Valve Sense Circuit Low

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Check wiring and plug that goes into valve. Valve can be replaced.

Hi Kim , Have the car for deep codes. I think that there may be a problem with the M*** Air Flow Sensor and possibly with the Throttle Position Sensor. Regards John

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P0508 Idle Air Control System Circuit Low
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Hello,

P0508 = Idle Air Control System Circuit Low

Symptoms:
Engine Light ON (or Service Engine Soon Warning Light) - Engine hard to start - Rough or erratic idle speed.

Causes:
Dirty throttle body - Electric throttle control actuator misadjusted or damaged - Faulty Electric throttle control actuator - Intake air leak - Poor electrical connection to the Intake Air Control (IAC) valve.

Solution:
If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replaced the Electric Throttle Control Actuator (Motor) to repair the problem.


I hope this helps!

Mike

SYMPTOM
P0508-IAC VALVE SENSE CIRCUIT LOW

WHEN MONITORED
Engine running. Battery voltage greater than 10 volts .

SET CONDITION
The IAC sense circuit is less than 175 mA . One Trip Fault.

POSSIBLE CAUSES

• IAC motor operation
• IAC motor
• (K61) IAC motor control circuit shorted to ground
• (K961) IAC return circuit open
• (K961) IAC return circuit shorted to ground
• (K61) IAC motor control circuit open
• PCM

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P0508 Idle Air Control Circuit Low.
This means that the Idle Air Control Circuit input is below acceptable limits.
You need to test the Idle Air Control (IAC) valve, the wiring between the IAC and the PCM and made sure the IAC passages in the throttle body are clean.

Your PCM unit may actually be faulty and letting moisture in